Programming Languages

C / C++
10
Java
10
JavaScript (ES5/6+)
10
PHP
10
Shell Scripting (Bash)
10
TypeScript
10
C#
9
Groovy
9
Python
8
Visual Basic
8
Haskell
5

Web / Mobile

Angular 2+
10
Apollo
10
Cordova
10
Framework7
10
HTML / HTML5
10
jQuery
10
Laravel / Lumen
10
Material
10
Node JS
10
React
10
SASS / CSS / CSS 3 / LESS
10
Bootstrap
9
WordPress
9
AWS Lambda
8
Vue
7
Android (Java)
5

API

GraphQL
10
REST
10
Web Sockets
10
SOAP
7

Testing Frameworks

Enzyme (React)
10
Jasmine
10
Jest
10
Karma
10
Mocha
10
PHPUnit
9
Spock
9
JUnit
8
Selenium (Web automation)
8
Cucumber
7

Infrastructure & Continuous Integration

Bitbucket Pipelines
10
GitLab Pipelines
10
Amazon Web Services (AWS)
9
Docker
9
GitHub Pipelines
9
Azure
8
Google Cloud
7
Jenkins
7
Kubernetes
7

Package Manages & Build Tools

NPM
10
Babel
10
Webpack
10
Composer
9
ElectronJS
9
Maven
9
Yarn
9
Gradle
8
Grunt
8

Databases & Data Stores

MySQL
10
PDO
10
Entity Framework
9
TSQL / SQL Server
9
JDO
8
Redis
8
BigQuery
7

Version Control

Git
10
Hg (Mercurial)
8
SVN
8
Bzr (Bazaar)
6
TFS
6

Payment Gateways

BitPOS
9
PayPal
9
eWay
8
GE Latitude
7

Design

Lightroom
9
Photoshop
9
Illustrator
8
Material UI Design
7

IoT

Home Assitant
10
MQTT
10
Raspberry Pi
10
Amazon Alexa Skills
9
ESP 32/8266
9
Arduino
8
OpenHAB
6